2l6 NEW YORK STATE MUSEUM 



with yellowish Sciara larvae. The larva of this midge was not seen. 

 This species is closely allied toL. americana from which it is 

 most easily separated by the relatively longer twelfth and thirteenth 

 antennal segments, these latter having a length two and one-half 

 times the diameter, the distal being knobbed. See the above citation 

 for a description of the male. 



Leptosyna americana n. sp. 



The specimen referred to this genus was captured in a trap lan- 

 tern at Nassau, N. Y., May 27, 1908. 



Male. Length .75 mm. Antennae extending to the second ab- 

 dominal segment, sparsely haired, fuscous yellowish; 13 segments, 

 the first somewhat produced, obconic, the second short, subglobose, 

 the third and fourth distinct, the fifth with a stem as long as 

 the subcylindric basal enlargement, which latter has a length one- 

 half greater than its diameter and is adorned subapically with a thick 

 whorl of long, stout setae, the twelfth and thirteenth segments are 

 rather closely fused, the latter truncate apically. Palpi apparently 

 uniarticulate. Mesonotum dark reddish brown. Scutellum, post- 

 scutellum and abdomen fuscous yellowish or yellowish orange. 

 Wings hyaline, subcosta uniting with costa at the basal third, the 

 third vein at the apex and the simple fifth at the distal third. 

 Halteres yellowish transparent. Legs light fuscous yellowish; 

 tarsi slightly darker, presumably five-segmented. Genitalia; basal 

 clasp segment stout, truncate ; terminal clasp segment stout, strongly 

 curved, apically with a heavy, recurved, process; dorsal plate long, 

 broad, deeply and triangularly emarginate, the lobes roundly trun- 

 cate; ventral plate long, nearly divided, the lobes long, slender, 

 tapering, narrowly rounded. (Plate 13, figure 5.) Type Cecid. 



1 34-1- 



Frirenia Kieff. 



1894 Kieffer, J. J. Wien. Ent. Zeit., 13:204, 206-9 

 1904 Meunier, F. Soc. Sci. Brux. Ann., 28:9 

 191 1 Felt, E, P. N. Y. Ent. Soc. Jour., 19:37 

 1911 N. Y. State Mus. Bui. 147, p. 85 



Members of this genus may be recognized by the 3 simple long 

 veins, the third disappearing before the tip of the wing, the mem- 

 brane sparsely clothed with fine hairs, and the 5 tarsal segments, 

 the first being shorter than the second, in connection with the Partic- 

 ulate palpi. Antennal segments 13, subcylindric and with short 

 stems in both sexes. Male genitalia ; basal clasp segment stout, 

 subtriangular ; terminal clasp segment rather long, stout, with a 

 distinct, chitinous process at the internal distal angle; dorsal plate 

 short, broad, deeply and roundly emarginate, the lobes roundly tri- 

 angular ; ventral plate rather long, broad, truncate apically ; oviposi- 

 tor short, the lobes consisting of three subequal segments. Type 

 F. t e n e 1 1 a Kieff. No American species are known. 



